Emission characteristics of PM<sub>2.5</sub> from flue gas desulfurated by limestone-gypsum method

BAO Jingjing; LIU Hang; PAN Jing; MA Mingxue; WANG Jianhang; YANG Hongmin; YANG Linjun

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Emission characteristics of PM_2.5 from flue gas desulfurated by limestone-gypsum method

更新时间：2025-09-28

- Emission characteristics of PM_2.5 from flue gas desulfurated by limestone-gypsum method
- Thermal Power Generation Vol. 43, Issue 10, Pages: 1-7(2014)
- 作者机构：
  
  1. 南京师范大学能源与机械工程学院
  2. 东南大学能源热转换及其过程测控教育部重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC： X773
- Published：2014
- 稿件说明：
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BAO Jingjing, LIU Hang, PAN Jing, et al. Emission characteristics of PM_2.5 from flue gas desulfurated by limestone-gypsum method[J]. Thermal power generation, 2014, 43(10): 1-7.
DOI：

BAO Jingjing, LIU Hang, PAN Jing, et al. Emission characteristics of PM_2.5 from flue gas desulfurated by limestone-gypsum method[J]. Thermal power generation, 2014, 43(10): 1-7. DOI：

摘要

对模拟试验系统和实际燃煤电厂石灰石-石膏法脱硫净烟气中的PM2.5排放特性进行了对比研究。结果表明:模拟系统燃煤细颗粒物数浓度在电称低压冲击器(ELPI)可测范围内呈单峰分布

以亚微米级微粒为主

多呈球形结构

主要为难溶于水的硅铝质矿物颗粒。然而

实际电厂燃煤细颗粒物数量浓度呈双峰分布。经过石灰石-石膏湿法烟气脱硫(WFGD)的净烟气中

细颗粒物峰值粒径由脱硫前的0.07μm增至0.15μm

粗颗粒段数量较脱硫前稍有降低

但0.1~0.5μm粒径段颗粒数量浓度反而有所提高;出现少量微米级的块状结晶态细颗粒

Ca、S、O元素含量增加。

Abstract

Emission characteristics of PM2.5from flue gas in simulated system and actual coal-fired power plant equipped with limestone-gypsum desulfurization system were investigated.The results show that the number concentration distribution of PM10 in raw flue gas

determined by ELPI in simulation system

presented a unimodal distribution while that in actual power plant was bimodal.Most of the fine particles were in submicron size range

with an irregular structure of sphere and a main composition of water-insoluble salic minerals.After desulfurization

the number peak particle size had moved from 0.07μm to 0.15μm

and the number of coarse particles decreased slightly.However

the particles sizing from in 0.1μm to 0.5μm increased instead

indicating the WFGD had a lower efficiency in removing the fine particles.Furthermore

a few crystalline particles in micron size appeared

with an increase in Ca

S and O elements.

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Related Institution

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Emission characteristics of PM2.5 from flue gas desulfurated by limestone-gypsum method

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关键词

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Emission characteristics of PM_2.5 from flue gas desulfurated by limestone-gypsum method